Isitofu
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Izisombululo zeGreat Wall Filtration zeMveliso yeGonyo ekhuselekileyo necocekileyo
Indima Yokucaciswa Kwemveliso Yezitofu Zokugonya Zisindisa izigidi zobomi minyaka le ngokuthintela izifo ezosulelayo ezifana ne-diphtheria, i-tetanus, i-pertussis, kunye ne-masisi. Zahluka kakhulu ngohlobo—ukusuka kwiiproteni eziphinda zihlanganiswe ukuya kwiintsholongwane okanye iibhaktheriya ezipheleleyo—kwaye ziveliswa kusetyenziswa iinkqubo ezahlukeneyo, kubandakanya amaqanda, iiseli zezilwanyana ezanyisayo, kunye neebhaktheriya. Ukuveliswa kwezitofu kubandakanya ii-stag ezintathu ezibalulekileyo...
